Pump



F. 1. MILLER.

Mar. 20, 1923.

PUMP.

FILED APR.13| 1.922.

F. I MILLER, gwvewo'a hail. @Waimea l Il,

Patented ll/lar. 2Q), 1923.

untranraras enfant operon.,

FRANK J. MILLER, 20F LOS ANGELES, CALJEJEORNIA, ASSEGNOR T0 SANDERS WALKER,

0F WICHIT FALLS, TEXAS.

PUMP.

Application led April 13, 1922. Serial No. 552,257.

haveinvented a certain new and useful lmprovement in Pumps, of which the following is a full, clear, and exact description, suc-h as will enable othersskilled in the art to which it-appertains to make and use the same.

` My invention relates to an improvement in deep well pumps and is designed especially for working in oil and water wells of great depth, wherein quantities of sand and other sediment is contained in the oil, tending to wear the plunger and pump barrel. lt is the object of my invention to provide a pump which will wear for a long period of time and still maintain efficiency.

Another object is to provide a means of disposing of the sand ordinarily tending to settle about the plunger and working barrel so"that itwill not wear the pump or clog the working of the valves.

Other objects and advantages will be apparent toone skilled in the art upon the more detailed description which follows:

Referring to the drawing wherein the preferred embodiment. of my invention is set forth, l have shown a central longitudinal section through a tubing or pump barrel equipped with my invention.

' In the drawing the tubing or pump barrel is shown at 1. At one of the joints-adjacent the lower end of this tubing l provide a disk or diaphragm 2, which is threaded on its outer periphery to screw within the adjacent ends of the two joints in the tubing 1. This diaphragm is of, substantial thickness and is countersunk and threaded at 3 on its upper surface to provide a stuiiing box of ordinary construction.

Working within this'stufling box is a tubular plunger 4. This plunger has at its upper end a ball cage-or crown 5, a valve seat 6, and a ball valve 7. The plunger -is adapted to work Huid-tight through thev stuffing box and to extend downwardly into the tubing, telescoping within an upstanding pipe or stationary plunger 8, secured adjacent the foot valve.

At a point spaced somewhat above the upper end of the stationary pipe 8 l provide a coupling 9 on the outer surface of my plunger, this coupling being threaded on both its outer and inner surfaces. lit acts to connect the two portions of the plunger and also for attachment on its outer surface to an outer plunger l0. rlhis outer plunger vis spaced from the inner plunger 4 sufficiently to include the stationary pipe 8, and to telesc ope closely over the outer surface of said p1 e.

he stationary pipe or plunger 8 is secured `within a threaded opening 11 within a perforated diaphragm 12, fixed on the inner facing of the tubing 1. rllhe said diaphragm or disk 12 is perforated by means of open-- ings or holes, 13, to allow the passage downwardly therethrough, of sand accumulating within the pump barrel. rlhe diaphragm 12 has a downwardly extending projection or flange 14 threaded on its outer face for attachment within a coupling l5.

Below the end of this flange is fixed a foot valve16 secured within the coupling 15 and closing the passage through the tubing coupling except for a central valve-closed opening 17. The foot valve 18 fitting within the said opening 17 is preferably tapered downwardly to form a close fit therein. Below the foot valve 16 is a downwardly extending pipe 19 which forms a housing between which and the tubing is a-sand chamber 20. `Within the pipe 19 and extending downwardly from the foot valve is an inner oil suction pipe 'or gas anchor 21, of ordinary construction.

ln the operation of my device, the diaphragm 2 -through which the plunger reeliminate the falling of 'the sand down around the plunger. The plunger works through the stuffing box, and sand settling from the oilbeing pumped will be prevented from working past the stuing box to the plunger. Should the stufng box' become worn however, and sand find its way downwardly around the plunger, such sand would fall upon the lower disk 1-2 and be carried through the openings 13A` therein, to the chamber 20 toward the bottom of the well;`

rlihe plunger formed bythe two concentric pipes and 10 telescoping over the stationary pipe 8 in the manner shown and described, results in a type of piston which will tend to maintain a complete suction. This will be due to the fact that an oil film will form between the telescoping pipes and serve to maintain the same air-tight even after they have become quite worn.

y The advantages of this type of pump will be apparent to one skilled in the art. rIhe 'sand will be prevent-ed from obtaining entrance down around the plunger, due to my sand catcher, but even if sand does obtain entrance about the plunger to some extent, the particular construction of the said plunger will prevent the reciprocating parts from leaking for long periods of time, due

tothe manner in which the oil'assists in.

forming a tight closure between the reciprocating parts.

Having thus yI claim is new'and ters Patent is:

l. In a pump, a pumpbarrel,'a transverse diaphragm across said pump barrel, and a stuln box therein, aplungerreciprocating throug said stuing box, a foot valve, an upwardly extending pipe secured thereto, said plunger formed to telescope both .out-

described my invention, what desire to protect by Letl side and inside said pipe, and storage meansV for sand forming about said plunger.

. 2. In apump, a pump barrel, a diaphragm closing the passage therethrough and a plunger fittingtightly through an opening in said diaphragm and adapted toreciprocate therethrough, an outer concentric pipe secured to said plunger below said diaphragm, a foot valve below said plunger, a pipe projecting upwardly from said foot valve and adapted to `telescope between said concentric pipes forming the manner described.

3. In a pump, apump barrel, a plunger therein comprising a central tubular member, and valve-controlled passage therethrough, an outer-tubular member secured thereto and spaced upwardly therethrough, a foot valve, an upwardly projecting pipe secured theretoand adapted to fit between the outer and inner pipes comprising said plunger, and means to prevent the sand from settling about said plunger and said foot valve.

4. In a pump, a pump barrel, a foot valve therein, a perforated diaphragm, a pipe sesaid plunger, inv

cured therein, a valve-closed opening below Said pipe, a plunger telescoping over said pipe, and means to prevent sand from accumulating about said plunger comprising an upper diaphragm through which said plun- FRANK. J. MILLER. 

